Screw driver



Feb. 7, 1928. 1,658,658

P. F. SCHAFFER SCREW DRIVER Filed April 12, 1927 .tatented Feb. 7, 1928UNITEE STATES PHILLIP F. SCHAFFER, OF WILDW'OOD, NEW JERSEY.

SCREW DRIVER.

Application filed April 12, 1927. Serial No. 183,132.

This invention relates to screw drivers and has relation moreparticularly to a device of this kind especially designed and adaptedfor use in connection with shears or the like, and it is an object ofthe invention to provide means whereby the shears are positively held bythe screw driver blade yet permitting such blade to be operated asrequired to either tighten or loosen the pivot screw 01 the shears toettect a correct adjustment of the blades of the shear-s.

The invention consists in the details of construction and in thecombination and arrangement of the several parts of my improved screwdriver whereby certain impor tantadvantages are attained and the devicerendered simpler less expensive and otherwise more convenient andadvantageous for use, as will be hereinafter more fully setiorth.

The novel features of my invention will hereinafter be definitelyclaimed.

In order that my invention may be the better understood I will nowproceed to describe the same with reference to the accompanying drawing,wherein Figure 1 is aview in perspective illustrating a screw driverconstructed in accordance with an embodiment of my inven tion with apair of shears associated there with;

Figure 2 is a vertical sectional view taken through the device as hereinembodied with a part in elevation;

Figure 3 is a. view in side elevation of the device as herein disclosedwith the wrench applied for turning the shank;

.l igure 4,- is a view in top plan oi the wrench as herein employed.

As herein disclosed, B denotes a body member or block of requisitedimensions and which is provided therothrough with an opening 1, the topwall of which being oppositely beveled, as at 2, and the side walls 3 oiwhich being provided with the slots 4 to provide further means wherebyvisual access may be had within the opening 1.

The top portion of the block or body member B at its axial center isprovided with an opening 5 through which is threaded an elongated sleeve6. the bore of which being smooth and unobstructed. The outer endportion of the sleeve 6 is provided with a head 7 angular in contour,the bore 8 of said head being reduced with respect to the bore of thesleeve 6 proper.

Freely disposed through the sleeve 6 and readily rotating therein is ashank 9 the upper portion of which being reduced, as at 10, to readilyextend tlnough the bore 8 oi the head 7. This reduced portion 10 is of alength to extend beyond the head 7 and such reduced portion is providedwith the flattened faces 11. The reduced POT-1 tion 10 is se 'iarated'from the shank 9 proper by an annular beveled shoulder 12 which isadapted to have direct contact from below with a correspondingly beveledshoulder 9': interposed between the bore 8 of the head 7' and the bore01' the sleeve 6 proper.

The shank 9 isoi a ength to have its inner end portion extending beyondthe inserted end portion of the sleeve 6 and said ext-ended portion isoppositely beveled to provide a screw driver blade 15 adapted to haverequisite engagement within the groove of the pivot screw comprised in apair of shears or the like.

For use in connection with my improved screw driver is a wrench W havingat one end portion a suitably formed opening 16 adapted to snugly engagewith the outer part of the upper extended portion of the shank 9 forrotating the same. The wrench W is provided in its opposite end portionwith a suitably formed opening 17 for engagement with the head 7 of thesleeve 6 for rotating the sleeve as desired to raise or lower the samewith respect to the bottom wall 18 of the block or member B. This bottomwall 18 in its central portion is provided therethrough with an openin19 to receive the point or free end portion of the shank of the pivotscrew of shears or the like when the same are in applied position withrespect to the block or member B for turning said pivot screw to obtainthe correct adjustment of the blades of the shears. In practice, theshears are disposed through the opening 1 of the block or men1- ber Bwhereupon the sleeve 6 is turned in a direction to bring the blade 15 inrequisite engagement within the move in the head of the pivot screw ofthe shears where by requisite rotation is given to the shank 9 totighten or loosen the pivot screw as may be necessary in order to obtainthe desired adjustment of the blades of the shears.

From the foregoing description it is thought to be obvious that a screwdriver constructed in accordance with my invention is particularly welladapted itor use l on by reason of the convenience and facility withwhich it may be assembled and operated, and it will also be obvious thatmy invention is susceptible of some change. and modification withoutdeparting from the principles and spirit thereof and for this reason Ido not wish to be understood as limiting myself to the precisearrangement and formation of the several parts herein shown in carryingont my invention in practice except as hereinafter claimed.

1. A. device of the character described comprising, in combination. abody member having an opening thercthrongh, a sleeve threaded through awall of the member and extending within the opening thereof, a shankireely disposed through the sleeve and extending beyond opposite endsthereof, said sleeve being provided with an internal shoulder and theshank with an annular shoulder for contact with said inter nal shoulder.the inner end of the shank constitnting a screw driver blade. a

2. A device of the character described comprising, in combination. abody member having an opening theretln'ough, a sleeve threaded through awall of the member and extending Within the opening thereof, a

shank freely disposed through the sleeve and extending beyond oppositeends thereof, said sleeve being provided with an internal shoulder andthe shank with an annular shoulder for contact with said internalshoulder, the inner end of the shank constituting a screw driver blade,the outer end portion of the sleeve and shank being each provided withmeans for rotating the same.

3.1K device of the character described comprising, in combination, abody lHCl'IllJOI' having an opening therethrough. a sleeve threadedthrough a wall of the member and extending within the opening thereof. ashank freely disposed through the sleeve and extending beyond oppositeends thereof. said sleeve being provided with an internal shoulder andthe shank with an annular shoulder for contact with said internalshoulder, the inner end of the shank constituting a screw driver blade,the wall of the body member opposed to the wall through which thesleevEis directed being provided with an opening aligned with the boreof the sleeve.

In testimony whereof I hereunto aliix my Signature.

PHILLIP F. SCHAFFE v.

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